FAIRFIELD COUNTY, Conn. -- The sudden cold snap that descended upon Fairfield County on Tuesday night will stick around on Wednesday night, too, threatening sensitive plants and flowers, according to the National Weather Service.

A Freeze Watch is in effect for coastal Connecticut from 2 to 10 a.m. Thursday as the cold temperatures move into the area, the weather service said.

Temperatures are expected to drop into the mid 20s inland to the upper 20s along the coast on Wednesday night. Patchy frost is forecast throughout the region after 11 p.m. Tuesday, the National Weather Service said.

The night will be clear with the wind dying down, creating more favorable conditions for frost to form. Precautions should be taken to protect plants that are sensitive to frost. The below-freezing temperatures could kill crops and other vegetation, the National Weather Service said.

The average low temperature in Fairfield County for April is 38 to 40 degrees.

High and low temperatures will slowly climb back toward the average for April by the weekend.